| 摘要 |
PCT No. PCT/GB91/01152 Sec. 371 Date Jan. 19, 1993 Sec. 102(e) Date Jan. 19, 1993 PCT Filed Jul. 12, 1991 PCT Pub. No. WO92/01677 PCT Pub. Date Feb. 6, 1992.Herbicidal pyrimidine and triazine derivatives of the formula: <IMAGE> (I) and salts thereof, where: X represents -CH= or -N=; Y is a substituted or unsubstituted alkyl or amino group; R1 represents a substituted or unsubstituted alkyl, cycloalkyl, phenyl or heterocyclyl group; R2 represents hydrogen, halogen or alkyl; and R4 and R5, which may be the same or different, each represent hydrogen, alkyl, alkoxy, amino, alkylamino, dialkylamino or halogen.
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